MOC8100TM Equivalent & Substitute Parts

Part Overview

The MOC8100TM is an optoisolator transistor with base output manufactured by onsemi, rated for 7500Vpk isolation voltage in a 6-DIP through-hole package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The MOC8100TM provides single-channel isolation with transistor output configuration suitable for applications requiring galvanic isolation in DC input circuits.

Key Parameters

Parameter	Value
Manufacturer Part Number	MOC8100TM
Manufacturer	onsemi
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	7500Vpk
Current Transfer Ratio (Min)	30% @ 1mA
Output Type	Transistor with Base
Voltage - Output (Max)	30V
Vce Saturation (Max)	500mV
Operating Temperature	-55°C ~ 100°C
Mounting Type	Through Hole
Package / Case	6-DIP (0.400", 10.16mm)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the MOC8100TM is determined by the following critical parameters:

Isolation Voltage: Minimum 7500Vpk or equivalent 5000Vrms rating
Number of Channels: Single channel only
Output Type: Transistor with Base configuration
Package Type: 6-DIP through-hole mounting
Input Type: DC input
Voltage - Output (Max): 30V or higher
Operating Temperature Range: Must encompass or match -55°C ~ 100°C

Substitute parts are grouped into two categories based on isolation voltage specification: parts maintaining 7500Vpk isolation (direct equivalents) and parts with 5000Vrms isolation (functional alternatives with reduced isolation margin).

Parameter Comparison

Parameter	MOC8100TM	H11A2M	H11A3M	H11A4M	H11A5M	MOC8100G
Manufacturer	onsemi	onsemi	Fairchild Semiconductor	onsemi	Fairchild Semiconductor	Isocom Components 2004 LTD
Voltage - Isolation	7500Vpk	7500Vpk	5000Vrms	7500Vpk	5000Vrms	5300Vrms
Current Transfer Ratio (Min)	30% @ 1mA	20% @ 10mA	20% @ 10mA	10% @ 10mA	30% @ 10mA	—
Turn On / Turn Off Time (Typ)	20µs, 20µs	2µs, 2µs	3µs, 3µs	2µs, 2µs	3µs, 3µs	—
Output Type	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Darlington with Base
Voltage - Output (Max)	30V	30V	80V	30V	80V	30V
Vce Saturation (Max)	500mV	400mV	400mV	400mV	400mV	500mV
Operating Temperature	-55°C ~ 100°C	-40°C ~ 100°C	-55°C ~ 110°C	-40°C ~ 100°C	-55°C ~ 110°C	-55°C ~ 100°C
Mounting Type	Through Hole	Surface Mount	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	6-DIP (0.400", 10.16mm)	6-SMD, Gull Wing	6-DIP (0.400", 10.16mm)	6-DIP (0.300", 7.62mm)	6-DIP (0.400", 10.16mm)	6-DIP (0.400", 10.16mm)
Product Status	Obsolete	Obsolete	Obsolete	Obsolete	Obsolete	Active

Engineering Selection Recommendations

Direct Equivalents (7500Vpk Isolation, Through-Hole 6-DIP):

H11A3M and H11A5M maintain the 5000Vrms isolation specification (equivalent to 7071Vpk) and through-hole 6-DIP packaging. H11A3M is manufactured by Fairchild Semiconductor and is ROHS3 compliant. H11A5M is also Fairchild Semiconductor with ROHS3 compliance and higher maximum output voltage (80V vs. 30V). Both support the full operating temperature range of -55°C ~ 110°C.

H11A4M is onsemi-manufactured with 7500Vpk isolation matching the MOC8100TM specification. However, it features a smaller 6-DIP package (0.300" vs. 0.400") and reduced minimum current transfer ratio (10% @ 10mA vs. 30% @ 1mA), requiring PCB layout verification for pin compatibility.

Alternative with Active Status:

MOC8100G by Isocom Components 2004 LTD is the only active product in this group, rated at 5300Vrms isolation. It features Darlington output configuration (vs. transistor with base) and is ROHS3 compliant. This part maintains through-hole 6-DIP packaging and operating temperature range matching the MOC8100TM.

Surface-Mount Alternative:

H11A2M is onsemi-manufactured with 7500Vpk isolation but uses surface-mount 6-SMD packaging. This part is suitable only for designs transitioning to SMD assembly and requires PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can H11A3M or H11A5M directly replace MOC8100TM in existing PCB designs?

A: Yes, both parts are pin-compatible 6-DIP through-hole packages with matching isolation voltage specifications (5000Vrms ≈ 7500Vpk). Electrical parameters are compatible for standard isolation applications. Verify output voltage requirements, as H11A3M and H11A5M support 80V maximum output versus 30V for MOC8100TM.

Q: What is the difference between H11A4M and MOC8100TM?

A: H11A4M maintains 7500Vpk isolation and through-hole mounting but uses a smaller 6-DIP package (0.300" vs. 0.400" pitch). The minimum current transfer ratio is lower (10% @ 10mA vs. 30% @ 1mA). PCB footprint compatibility must be verified before substitution.

Q: Why is MOC8100G listed as an alternative if it uses Darlington output?

A: MOC8100G is the only active product available with comparable isolation voltage (5300Vrms) and through-hole 6-DIP packaging. Darlington output provides higher current gain but different switching characteristics. Use only if application tolerates Darlington behavior and active product status is required.

Q: Are all substitute parts ROHS compliant?

A: H11A3M and H11A5M are ROHS3 compliant. MOC8100G is ROHS3 compliant. H11A2M and H11A4M do not list RoHS status in available specifications. Verify compliance requirements with your procurement standards.

Q: Can H11A2M replace MOC8100TM?

A: H11A2M is electrically compatible with 7500Vpk isolation and matching output specifications. However, it uses surface-mount 6-SMD packaging instead of through-hole 6-DIP, requiring PCB redesign and assembly process changes. Use only for new designs or board revisions.

Q: What is the operating temperature difference between MOC8100TM and substitute parts?

A: MOC8100TM operates -55°C ~ 100°C. H11A3M and H11A5M extend to -55°C ~ 110°C. H11A2M and H11A4M are limited to -40°C ~ 100°C. Verify application temperature requirements before selection.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message